[1] School of Physics, Peking University, Beijing,100871, China
[2] Center for High Energy Physics, Peking University, Beijing,100871, China
[3] PITT PACC, Department of Physics and Astronomy, University of Pittsburgh, 3941 O'Hara St., Pittsburgh,PA,15260, United States
[4] Key Laboratory of Beam Technology of Ministry of Education, School of Physics and Astronomy, Beijing Normal University, Beijing,100875, China
[5] Institute of Radiation Technology, Beijing Academy of Science and Technology, Beijing,100875, China